The HP TPC-CA57 19.5V 4.74A 90W Genuine Original AC Power Adapter Charger is a high-quality, reliable power supply specifically designed for the HP TPC-CA57 model. This black adapter provides a consistent output of 90W and 4.74 A, ensuring that your laptop stays powered and ready for use. Made by HP, a trusted brand in technology, this AC/DC adapter is a genuine original product that meets the standards of quality and compatibility expected for HP devices. Perfect for keeping your laptop charged and ready for work or entertainment.